It would be useful if the Macro Controls Transition Curve editor had a readout of the start and end values.
Something as simple as two numbers displayed below the curve on the left and right would be helpful.
Here's an example of what this could look like. I used this parameter as an example because when editing the curve for this parameter there's very little indication as to where any values between 20 hz and 2.0 khz are since that area is entirely blank on the display. Also, it might be easier to read two larger-text numbers at the bottom than estimate where you want to land on a small graph with small numbers.